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本帖最后由 yyj 于 2018-1-30 11:01 编辑 - H9 T9 {. U9 E, w
- [code]EDMA sample test application1 P3 T9 \! t7 j3 `
- /*
1 m' I, j l6 U) S5 M - * edma_test.c
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" J( m) Q5 [+ t - * brief EDMA3 Test Application3 K: ]& u( p U% @3 e% { X8 \
- *
4 \8 G$ q1 h. }4 g" r: i - * This file contains EDMA3 Test code.. F& ^4 ~1 y& ~7 B6 ]! o, y7 F9 I" a
- *
! {; O. y3 H: i2 F. r - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
, }+ p- K% @, U4 y Y+ Z+ S - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
# B8 I) r/ R7 ~+ n; H6 P9 ^ - * TO CHANGE.5 X) m$ r( X! B" Z. {1 }
- *
/ W1 l7 C- S/ ~/ d - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/8 J4 R" z o" P+ m- R$ h
- *
# W7 T5 a; f0 Y3 I9 ^, v - * This program is free software; you can redistribute it and/or2 L% s3 E; J/ h8 \, ?
- * modify it under the terms of the GNU General Public License as8 L$ u6 `4 T" t3 o
- * published by the Free Software Foundation version 2.
5 y/ H0 l* B) U1 w. m - *
! L" G I& v2 h% j- d - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ Q& H, ?+ T. r- q/ Y$ y - * kind, whether express or implied; without even the implied warranty7 r9 q& X& ]# e1 i5 s0 h
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5 c2 |. y* Z0 W$ L2 [9 _ - * GNU General Public License for more details.
1 A# }! E. i4 Z9 d5 t& T - */
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! n( Q7 K' `" Y( l' |+ u! U7 I n3 j; A, ~3 I- #include <linux/module.h>
% O/ U5 d- X# k# p- u8 _ - #include <linux/init.h>$ \) S3 g+ j2 M' F0 ~
- #include <linux/errno.h>; |$ Y: Q* Y& u+ s! J
- #include <linux/types.h>+ k9 ]3 ^: g: f, v- f
- #include <linux/interrupt.h>
4 `, M; a. S/ b+ Y - #include <asm/io.h>2 G5 v, Q4 ]- v/ k( b' V
- #include <linux/moduleparam.h>
* {7 `; {0 x1 d9 B - #include <linux/sysctl.h>
0 r' N% a h6 w1 Z+ p2 f - #include <linux/mm.h>
8 O/ g6 L% k2 O2 A9 ] - #include <linux/dma-mapping.h>
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- #include <mach/memory.h>
* @1 i2 o5 w# u6 J# S - #include <mach/hardware.h>+ @% T5 I% @$ ?/ P
- #include <mach/irqs.h>0 Q i% L. d" x J0 Q
- #include <asm/hardware/edma.h>0 k: _& y4 H# [9 {% g
- 8 J- B# h$ `5 X0 B1 u4 L
- #undef EDMA3_DEBUG
8 k4 x" b* N, R" D9 N - /*#define EDMA3_DEBUG*/
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' V+ h, Y Z" S1 X/ ~5 O- #ifdef EDMA3_DEBUG8 S0 C6 N) F; Z% Z+ D9 _
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
q" G7 V6 L3 U) E% J+ i. d* g& R2 n - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)# h8 r9 a! j, V# R/ {' O; r
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
. f: \3 b. ]% o& h# q/ G% j/ B - #else
: p4 K3 Z8 o9 c' L7 L7 O$ | - #define DMA_PRINTK( x... ). o2 L/ w* Y+ `- j
- #define DMA_FN_IN
+ t; E7 Z& H8 S+ ?0 O9 v - #define DMA_FN_OUT
' S8 U* q- ~1 a2 C6 l - #endif
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6 l) G1 t6 L, h% J1 a- #define MAX_DMA_TRANSFER_IN_BYTES (32768)+ U! V9 K' q! s; k, R
- #define STATIC_SHIFT 3* g: m3 j8 s2 U1 z( C" {
- #define TCINTEN_SHIFT 20
) @7 V# f. c0 g; M8 | - #define ITCINTEN_SHIFT 212 g7 V8 m# }: [* o: i
- #define TCCHEN_SHIFT 22- `. n# I- g; O
- #define ITCCHEN_SHIFT 23
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5 M7 }0 j B6 c" x- static volatile int irqraised1 = 0;& d# \% _1 g8 U6 C# d/ h% z, A, m# n- S
- static volatile int irqraised2 = 0;8 p8 ?; P: U4 |) [: \
, r3 u& M9 `9 R r; P) S- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ h$ z4 [9 G) ^( _% M
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
& W: m' k0 o! a! u8 E* t - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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- dma_addr_t dmaphyssrc1 = 0;. i0 h7 A5 ^' C5 y; e
- dma_addr_t dmaphyssrc2 = 0;4 }( M% R) P) d2 e8 ?
- dma_addr_t dmaphysdest1 = 0;
2 b' C7 j1 W' S0 O# K4 y) S9 K - dma_addr_t dmaphysdest2 = 0;( T2 h+ W5 |- k
0 ~0 ?9 t0 }$ U: q: l- char *dmabufsrc1 = NULL;
: Y3 O) \) h$ w1 ]0 B - char *dmabufsrc2 = NULL;/ d6 s& z5 s7 Q0 G8 ^: f9 i
- char *dmabufdest1 = NULL;7 U k: C: Y9 s- y; j- x
- char *dmabufdest2 = NULL;
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- static int acnt = 512;& n V, S; _* s. I, H
- static int bcnt = 8;$ i5 v; ]7 u" m2 W3 p( S$ W; z
- static int ccnt = 8;
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( C2 q; h4 ~% ]% T- module_param(acnt, int, S_IRUGO);
% a6 ]* ~2 y2 c3 N( e" H - module_param(bcnt, int, S_IRUGO);+ f, d4 U4 K8 ~- U% ]
- module_param(ccnt, int, S_IRUGO);
复制代码
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这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分,我在编译的过程中是用, j& Z, ` _: H3 `
arm-none-linux-gnueabi-gcc -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译,但是报的错误特别多,我又试着一个函数一个函数往进加,仍然是很多错误。
- D) u/ h2 U* ^7 h2 m. y3 s! D 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
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